sploo":3em5dloc said:
t's all a bit mindboggling isn't it
Oh yeah, finishing is a very complicated subject with the many variables and little wrinkles. You can try to keep it simple by just sticking to a few basics and working with them in various combinations. For me that would be BLO, shellac, a varnish and paste wax. Some combination of those covers everything I need currently and it makes it easier to pick what to use.
If you wanted to you could oil everything, or just wax everything. There are a few woodworkers who do that.
sploo":3em5dloc said:
I notice that the DO is giving a much deeper sheen to the wood than the shellac.
Yeah, that'll be the wetting action of the oil. This effect is why it's not uncommon to use oil first even if the final finish is going to be shellac or varnish.
sploo":3em5dloc said:
If I added shellac over the DO then (vs just shellac) is the benefit (of the DO) just cosmetic, or is the penetrating part of the DO a benefit to the wood?
Honestly I doubt it adds much or any significant benefit to the wood, so maybe 95% cosmetic? This is with a harder wood like bubinga, softer woods may benefit more from being coated first in an oil+varnish mixture to toughen up the surface wood fibres.
sploo":3em5dloc said:
I was looking at DO because I'd assumed shellac was more a cosmetic coating for furniture items, and wouldn't be as hard wearing as DO for a tool handle. Perhaps that's incorrect.
This is one of those things where there's no easy answer. One person will get great service from shellac and another will report that it begins to flake off after a few years and that's the reason they switched to using BLO or Danish oil.
But it depends so much on what wood it was applied to, obviously how much use the handles are getting (pro v. weekend user) and how thickly the shellac is applied. It's actually a little less durable when applied very thickly as contradictory as that seems. And on top of all that the type of shellac matters, freshly-made button shellac is really quite different to a bleached shellac in a tin.